Form attaching supporting means



Jan. 21, 1936. S s, COLT I 2,028547 FORM ATTACHING SUPPORTING MEANSFiled Jan. 9, 1934 2 Sheets-Sheet l INVENTOR 5077211625 CoZZ,

.Fan. 21, 1936. s. s; COLT FORM ATTACHING SUPPORTING MEANS 2Sheets-Sheet 2 Filed Jan. 9, 1934 INVENTOR akin/6Z5 C058,

ATTORNEY Patented Jan. 21, 1936 nnirao sTATEs ATENT OFFICE 9 Claims.

This invention relates to devices for retaining concrete casting formwalls in assembled relation to structural steel, when it is desired toimbed the latter in concrete; and the invention has reference, moreparticularly, to means for retaining forms in operative relation toI-beams, girders, columns and similar elements entering into theconstruction of fabricated steel buildings and.

similar structures.

This invention has for its principal object to provide a simple andeasily applied means for attaching form walls in spaced and enclosingrelation to structural steel elements; the novel means for this purposebeing adapted to be easily and quickly adjusted along the element withwhich it is engaged, and being capable of assembly therewith from above,if desired, whereby the operations of attaching form walls are greatlyfacilitated.

Another object of the invention is to provide in connection with theform wall supporting means, parts adapted for spacing the side walls ofthe form relative to the structural element about which the same areassembled, said latter means being adjustable by bending to reduce thedistance of spacing, or to remove the spacing means from service shouldthis be desired.

Another object of this invention is to provide a novel form wallattaching means including a bottom form wall supporting member havingmeans to engage an attachment bolt so as to in terlock the head of thelatter therewith, to thereby prevent relative movement between themember and the bolt.

Another object of the invention is to provide a novel form wallattaching means having members adapted to so engage the structural steelele ment with which it is engaged that the attaching means is stoppedagainst relative or like displacing movements.

Other objects of this invention not at this time more particularlyenumeratedfwill be disclosed in the following detailed description ofthe same.

Illustrative embodiments of the present invention are shown in theaccompanying drawings, in which:--

Fig. 1 is a transverse vertical section of aconcrete form as operativelyapplied about an I- beam and retained in operative relation thereto byone type of attaching means according. to this invention; and Fig. 2 isa longitudinal vertical sectional view, taken on line 2-2 in Fig. 1, thecast concrete being omitted. Fig. 3 isa top end view, Fig. 4 alongitudinal sectional View, and

Fig. 5 a bottom view of an attaching device, such as shown in Figs. 1and 2, these views being drawn on an enlarged scale.

Fig. 6 is a transverse vertical section of a concrete form asoperatively applied about an I- 5 beam and retained in operativerelation thereto by a modified type of attaching means embodying theprinciples of the present invention; and Fig.

7 is a longitudinal vertical section, taken on line 1-"! in Fig. 6, thecast concrete being removed. Fig. 8 is a top end view and Fig. 9 avertical 1ongitudinal section of the modified type of attaching meansshown in Figs. 6 and 7, these views being drawn on an enlarged scale.

Similar characters of reference are employed in the above describedviews, to indicate corresponding parts.

Referring to the drawings, the reference character I0 indicates anI-beam about which it is desired to mount a form for casting concrete inenveloping relation to the same. The form comprises a bottom ortransverse wall II and side walls [2, all suitably spaced from the beamaccording to the dimensions desired with respect to the concrete mass inwhich the beam is to be imbedded. The novel form wall retaining orattaching devices are adapted to engage with the flanges ll! of the beamIll, so as to support the form in suspended relation therefrom.

One type of retaining or attaching device embodying the principles ofthis invention is shown in Figs. 1 to 5 inclusive of the drawings. Eachretaining or attaching device of this type com-, prises a hanger memberI3 of cylindrical form having an axial bore I 4. The lower portion ofthis bore is smooth surfaced while the upper I4 is internally screwthreaded. Integral with the upped end portion of the hanger member l3,and projecting laterally from the inner side thereof, is a horizontalsuspension lug or ear l5. Integral with the upper end portion of thehanger member l3, and projecting laterally from the outer or oppositeside thereof, is a spacer stop I6. This spacer stop It may be reenforcedby a central tapered Web 16', but notwithstanding such reenforcement thefree end portion of said spacer stop I6 is bendable so that the same maybe foreshortened to reduce its effective spacing length, or even bentdown to an out of service position in cases where its spacing effect isnot desired. To facilitate the bending of said spacer stop for thestated purposes the free edge of its web I6 is notched at intervals asindicated by reference numeral. ll. For a portion of its length below llfilo'cation of the suspension lug or ear [5, the

inner side of the hanger member 43 is cut away, as at l8, coincident toits bore I4, thus allowing a hanger bolt when operatively associatedtherewith to be disposed close to the margin of a beam 5 flange to whichthe hanger member is applied in use, whereby tendency of the hangermember, bolt and associated parts to tip or cant out of desiredperpendicular is diminished. Integrally connected with the oppositelateral sides of the hanger member I3, for extension therefrom inopposite directions parallel to the beam flange to which it is applied,are initially horizontal but downwardly bendable keeper projections orarms I9. These projections or arms I9 as thus arranged are preferablylocated in a plane either coincident with or somewhat above the plane ofthe suspension lug or ear I5. The reference character 28 indicates ahanger bolt having a threaded free end portion 2! and a head 22 ofpolygonal form at its opposite end. The reference character 23 indicatesa washer-like supporting member which is centrally perforated, as at 24,to pass upwardly therethrough the shank ofthe hanger bolt 20. The headof said hanger bolt 20 is 5 stopped against the outer face or undersideof said supporting member, and integrally formed with the latter toproject from such face or side are laterally spaced flanges 25, betweenwhich said bolt head is lodged and by which the same is engaged toretain the bolt against axial rotation relative to the supporting member23. Said flanges 25 are provided at their outer ends with bendable earsor retainer lugs 26 which, after the bolt 20 is assembled with thesupporting member, are inturned over the head 22 of the bolt, to therebyretain the latter in assembled relation to the supporting member andagainst longitudinal displacement therefrom.

To apply the novel retaining or attaching devices to the I-beam ID forsupporting the form walls, the hanger bolts 20, as assembled with thesupporting members 23, are thrust upwardly through openings 21 in thebottom wall II, and the supporting members 23 are temporarily secured tosaid bottom wall II by nails 28, which are inserted upwardly throughnail openings 29 and driven into said bottom wall. If desired, thesupporting members 23 are provided adjacent to the margins of the nailopenings 29 with nail stop projections 35 with which the heads of thenails engage (see Fig. 1), thus spacing the nail heads from the surfaceof the supporting member 23-, -whereby the same are more easilyaccessible to the claw of a hammer when it is desired to draw the nailsto remove the supporting members and bolt from the bottom wall I I afterdismantling a used form. After the supporting members and bolts areconnected with the bottom form wall I I, preferably spacedlongitudinally in pairs, the wall I I is temporarily suspended, by ropesor the like, beneath the I-beam III, with the threaded free end portionsof the bolt shanks respectively extending across the opposite margins ofthe bottom flanges I 0 of the beam. The hanger members l3 are thereuponslid over the bolt ends and the threaded portions I4 turned downwardlythereon until the suspension lugs or ears I5 are engaged upon theflanges Ill. The adjustment of the hanger members I3 on the bolts willdetermine the spaced relation of the bottom wall relative to the beam.Once desired adjusted position of the hanger members is attained, thekeeper projections, or arms I9, which are initially horizontal, are bentdownward across the margins of the flanges Ill (see Fig. 2), thuspreventing rotative displacement of the hanger members from desiredadjusted position, and assuring proper outward projection of the spacerstops I6. The side walls I2 are now put in place, being supported attheir lower edges upon the bottom wall II, and held against outwarddisplacement therefrom by stop strips 3| with which said bottom wall isprovided. The side walls are pressed inwardly until engaged by thespacer stops I5, whereby the desired spacing of the same relative to theI-beam it is assured. The presence of the notches I8 at the inner sidesof the hanger members, allows the hanger suspension lug or ears I5 tofoot themselves firmly on the beam flanges I3, while at the same timereducing tendency of the bolts to cant or tip outwardly. The length ofthe hanger member provides a considerable length of bore I4 to supportthe bolt so as to brace the same against any tendency to'bend relativeto its length under the stresses and strains incident to the support ofthe weight of the assembled form. When the side walls are in place, theymay be secured against displacement in any suitable manner. While I havedescribed above a method of assembling the form, whereby the bolts 23and supporting members 23 are first affixed to the bottom form wall II,it will be obvious that, if desired, the hanger members I3 may be put inplace and then the bolts 20 passed upwardly to screw into the hangermembers until the supporting members 23 abut and support the bottom formwall; this being done by turning the supporting member 23 andconsequently the bolts 20 which are non-rotatively assembled therewith.Such turning may be facilitated by application of a suitable tool to thewrench lugs 32 of the supporting member.

An advantage of the form retaining and attaching device of thisinvention is that, when a section of the form is related thereby to thebeam II), it may be shifted bodily and longitudinally along the beam, soas to assure proper jointure with cooperating form sections.

Referring to Figs. 6 to 9 inclusive, there is shown therein a somewhatmodified type of the novel retaining or attaching device of thisinvention, the same comprising a hanger member 33 having an axial bore34. Integral with the upper end portion of the hanger member 33, toproject laterally from the inner side thereof, is

a horizontal suspension lug or ear 35. Connected with the outer side ofsaid hanger member 33 is an outwardly and laterally projecting bendablespacer stop 36. Below the suspension lug or ear 35, to project inopposite directions from the lateral sides of the hanger member 33, tolie parallel to the beam to which the hanger member is applied, arekeeper arms or wings 38, adapted to abut the margins of the beam flangeto hold the hanger member against turning. The reference character 39indicates the hanger bolt having a threaded shank portion and a head 40.The hanger bolt'is assembled with a supporting member 4|, having theflanges 25 and bendable ears 26 to engage the bolt head 49, to retainthe bolt bothagainst rotation and longitudinal displacement relative tothe sup-porting member. The supporting member 4! is provided with aconical or externally tapered central sleeve or cone 42 through whichthe bolt shank extends. The under face of the supporting member may beconcentrically ribbed as at 33 to provide intermediate grooves 44,whereby frictional engagement of such face with a form bottom wall i iis reduced. This is of advantage, whether the bolt and supporting memberis associated with either the first described or'seconddescribed type ofhanger member, since it reduces friction when either assembling ordisassembling the form retainingand attaching devices. If desired, thebore of the hanger member 33 may be threaded at itsupper end portion, asin the first above described form of hanger member; as an alternativetothis, however, and as shown in Figs. 6 to 9 inclusive, the bore is notthreaded, but in lieu thereof a nut 45 of suitable kind is supplied forengagement with the freeend of the bolt shank as it projects upwardlythrough and beyond the top of the hanger member. To reduce frictionbetween the top and end of the hanger member and the nut, the former maybe chamfered in opposite directions from a transverse medial line, thusproviding aprojection 46' affordinga minimum= of surface contact withthe nut, while at the same time permitting the nut to readily adjustitself to the hanger member withoutdisturbing the alignment thereof.

In assembling the formby means of the last described retaining orattaching devices, the operations are substantially the same as aboveset forth in connection with the first described devices, and the spacerstops 36' may be adjusted for desired spacingefect by bending, or may beremoved from service by further bending, as shown in Fig. 6 by dottedlines, when it is not desired to have the ends of the stops exposed atthe faces of the cast concrete.

In dismantling the forms, whichever specific type of retaining orattaching devices are used, the bolts and supporting members are screwedoutwardly from the hanger members, and withdrawn from the cast concrete,the hanger members being left imbedded in the latter. The voids left bywithdrawal of the bolts and supporting member, may be plugged or pointedup with cement when finishing the job. It will be obvious that the boltsand supporting members may be repeatedly used, it only being necessaryto furnish additional hanger members. This makes for economy, since thecost of the hanger members is relatively low.

It may be desired with either type of retaining or attaching devices totie together laterally opposed sets thereo-f, as applied to oppositesides of a beam, to assure against accidental displacement pending thepouring of concrete. This may be done by means of the wire or other formof tie 41, as shown by dotted lines in Fig. 6.

The supporting member, in either form shown, or in other modificationsthereof, as provided with the means for engaging and interlocking a bolthead therewith, provides, per se, a novel element useful in formassembling work of various kinds.

Having now described this invention, I claim:--

1. Means cooperable with structural iron or steel elements forsupporting forms in connection therewith, comprising a hanger memberhaving a suspension ear to engage the element, a supporting member, abolt assembled with said supporting member, said supporting memberhaving means cooperable with the bolt head to retain the bolt againstrotative and longitudinal movement relative to said supporting member,said supporting member being adapted to abut and support a form wall,means for detachably connecting said,

bolt with said hanger member, a laterally projecting spacer stopextending from the outer side of said hanger member, and keeper armsoppositely projecting from lateral sides of said hanger member.

2. Means cooperable with structural iron or steel beams or the like forsupporting formsin connection therewith, comprisinga hanger memberhaving an axial'bore, a suspension ear horizon'tally projecting from theinner side of said hanger member at its upper end portion, a sup portingmember, a headed bolt having its shank extended centrally throughsaidsupportingmemher; said supporting member having bolt head embracingflanges between which the bolt head is ncn-rotatively engaged, saidembracing flanges having bendable ears engageable over thebolt head toretain the same against longitudinal displacement from said supportingmember, said supporting member being adapted to abut and support a formwall through which the bolt extends, means for detachably engaging saidbolt with said hanger member, and a spacer stop projecting from theouter side of said hanger member against which other form walls may beabutted to space the same relative to a beam, said spacer stop beingbendable to foreshortened spalcing extension or out of service positionat wil 3. Means cooperable with structural iron or steel beams or thelike for supporting forms in connection therewith, comprising a hangermember having an axial bore, a suspension earhorizontally projectingfrom the inner side of said hanger member at its upper end portion, asupporting member, a headed bolt having its shank extended centrallythrough said supporting member, said supporting member having bolt headembracing flanges between which the bolt head is non-rotatively engaged,said embracing flanges having bendable ears engageable over the bolthead to retain the same against longitudinal displacement from saidsupporting member, said supporting member being adapted to abut andsupport a form wall through which the bolt extends, means for detachablyengaging said bolt with said hanger member, a bendable form wall spacerstop projecting from the outer side of said hanger member, and bendablekeeper arms oppositely extending from lateral sides of said hangermember so as to be movable into abutment with the beam flange from whichthe hanger member is suspended to retain the latter against rotativedisplacement.

4. Means cooperable with structural iron or steel beams or the like forsupporting forms in connection therewith, comprising a hanger memberhaving a suspension ear horizontally projecting from its upper endportion, said hanger member having an axial bore, means carried by saidhanger member to engage the margins of the beam flange from which thehanger member is suspended to retain the latter against rotativedisplacement, form wall carrying means having portions engaged throughthe bore of said hanger member, means for detachably connecting saidcarrying means with said hanger member, and an adjustable form wallspacer stop projecting from the outer side of said hanger member.

5. Means cooperable with structural iron or steel beams or the like forsupporting forms in connection therewith, comprising a hanger memberhaving a suspension ear horizontally projecting from its upper endportion, said hanger member having an axial bore, means carried by saidhanger member to engage the margins of the beam flange from which thehanger member is suspended to retain the latter against rotativedisplacement, form wall carrying means having portions engaged throughthe bore of said hanger member, means for detachably connecting saidcarrying means with said hanger member, the inner side of said hangermember beneath the suspension ear being cut away coincident with itsbore for the purposes described.

6. Means cooperable with structural iron or steel beams or the like forsupporting forms in connection therewith, comprising an elongated hangermember having a laterally oil-set suspension ear at its upper endportion, said hanger member having an axial bore the upper end portionof which is internally threaded, laterally projecting bendable keeperarms extending from opposite sides of the upper end portion of saidhanger member, said keeper arms being movable across the margin of abeam flange from which the hanger member is suspended to hold the latteragainst rotative displacement, and form wall attaching means including athreaded shank insertable through the bore of said hanger member andupon which the latter may be screwed.

'7. Means cooperable with structural iron or steel beams or the like forsupporting forms in connection therewith, comprising an elongated hangermember having a laterally ofi-set suspension ear at its upper endportion, said hanger member having an axial bore the upper end portionof which is internally threaded, laterally projecting bendable keeperarms extending from opposite sides of the upper end portion of saidhanger member, said keeper arms being movable across the margin of abeam flange from which the hanger member is suspended to hold the latteragainst rotative displacement, form wall attaching means including athreaded shank insertable through the bore of said hanger member andupon which the latter may be screwed, and an adjustable form wall spacerstop projecting from the outer side of said hanger member.

8. In form wall retaining means, a supporting 10 member to abut a formwall, a headed bolt having its shank extended centrally through saidsupporting member, said supporting member having means cooperable withthe bolt head to retain the bolt against rotative and longitudinal 15movement relative to said supporting member, said supporting memberhaving means at its inner face adapted to reduce the contact areathereof and thus to reduce friction when turned against the surface of aform wall.

9. In form wall retaining means, a supporting member to abut a formwall, a headed bolt having its shank extended centrally through saidsupporting member, said supporting member having means cooperable withthe bolt head to retain the bolt against rotative and longitudinalmovement relative to said supporting member, said supporting memberhaving nail receiving openings, and nail stop projections adjacent tosaid openings.

SAMUEL S. COLT.

